An oil seal for electric motors in new energy vehicles

Abstract

The utility model relates to the technical field of oil seals, and discloses an oil seal for a motor of a new energy vehicle, which comprises an oil seal arranged in a "C" shape. An auxiliary component capable of assisting the oil seal in sealing is arranged inside the oil seal, and a plurality of adjusting components capable of adjusting the sealing tightness of the auxiliary component are arranged on the auxiliary component; by arranging the auxiliary component and the adjusting component, the oil seal can be assisted in sealing, and the sealing tightness can be flexibly adjusted. Under the complex operating conditions of the motor, the pressing force on the oil seal can be adjusted according to actual requirements, ensuring that the oil seal always maintains a good sealing effect; at the same time, the cooperative design between components, such as the fixing rod and the fixing hole, the pushing plate and the convex block, etc., ensures the stability and accuracy of the adjustment process, effectively solves the problem of insufficient sealing performance of traditional oil seals under complex working conditions, and improves the reliability and service life of the motor of the new energy vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seals, in particular to an oil seal for a motor of a new energy vehicle. Background Technique

[0002] At present, during the operation of the motor of a new energy vehicle, the oil seal plays a crucial role. It is mainly used to prevent the leakage of lubricating oil inside the motor, and at the same time prevent external dust, moisture and other impurities from entering the motor interior, ensuring the normal operation of the motor and extending its service life. Traditional oil seals usually rely on their own structure and the elastic force of the spring to achieve sealing. The spring provides a certain pressing force to make the lip of the oil seal closely fit on the surface of the motor shaft.

[0003] However, in actual use, the operating conditions of the motor are complex, and there will be situations such as vibration, high temperature and slight deformation of the shaft. Under the influence of these factors, it is difficult to always ensure the good sealing effect of the oil seal only by the elastic force of an ordinary spring. The spring will shift in position due to vibration, resulting in uneven pressing force on the lip of the oil seal; high temperature will reduce the elasticity of the spring and cannot provide sufficient pressing force; the deformation of the shaft will also damage the sealing fit between the oil seal and the shaft. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides an oil seal for a motor of a new energy vehicle.

[0005] The utility model is realized by the following technical solutions: An oil seal for a motor of a new energy vehicle includes an oil seal arranged in a "C" shape. An auxiliary component capable of assisting the oil seal in sealing is arranged inside the oil seal. A plurality of adjusting components for adjusting the tightness of the auxiliary component's seal are arranged on the auxiliary component. The auxiliary component includes a first auxiliary half-ring sleeved on one side inside the oil seal. A plug-in slot is opened inside the first auxiliary half-ring. A second auxiliary half-ring is sleeved on the other side inside the oil seal. Both ends of the second auxiliary half-ring extend into the inside of both ends of the plug-in slot of the first auxiliary half-ring. The inner ring surfaces of the first auxiliary half-ring and the second auxiliary half-ring are both in contact with one side of the inner cavity of the oil seal.

[0006] Through the above technical solutions, the first auxiliary half-ring and the second auxiliary half-ring cooperate with each other to form an auxiliary sealing structure, enhancing the overall sealing effect of the oil seal. They are in contact with the inner cavity of the oil seal, and can further block the leakage of lubricating oil and the entry of external impurities on the basis of the original seal of the oil seal.

[0007] As a further improvement to the above solution, a fixing ring is fixedly installed in the inner cavity of the oil seal, and the adjustment assembly includes a plurality of limiting rods fixedly installed on the first auxiliary half ring and the second auxiliary half ring. Each limiting rod is fitted with a push spring, and each limiting rod is slidably fitted with a push plate. One end of each push spring abuts against the adjacent push plate, and the other end of each push spring abuts against the adjacent first auxiliary half ring or second auxiliary half ring.

[0008] Through the above technical solution, the push spring applies a thrust to the push plate in its natural state. Under the restriction of the limit rod, the push plate transmits the thrust to the first auxiliary half ring and the second auxiliary half ring, thereby applying additional clamping force to the sealing part of the oil seal by the first and second auxiliary half rings, improving the sealing effect. At the same time, by adjusting the compression degree of the push spring, the clamping force on the first and second auxiliary half rings can be changed, thereby adjusting the tightness of the seal.

[0009] As a further improvement to the above solution, the inner ring surface of the fixed ring is provided with a first sliding groove, and multiple protrusions are fixedly installed on the inner ring surface of the fixed ring. Each pair of adjacent protrusions are symmetrically located on both sides of the first sliding groove, and one end of each limiting rod extends into the interior of the first sliding groove.

[0010] Through the above technical solution, the limiting rod slides in the first sliding groove, ensuring the movement stability of the push spring, the push plate, the first auxiliary half ring, and the second auxiliary half ring. The protrusion cooperates with the push plate. When the push plate slides on the limiting rod, the protrusion can limit the sliding range of the push plate. At the same time, according to the different contact positions between the push plate and the protrusion, the compression degree of the push spring can be adjusted to achieve fine adjustment of the sealing tightness.

[0011] As a further improvement to the above solution, each of the push plates is arc-shaped on both sides, and each of the protrusions is arc-shaped.

[0012] Through the above technical solution, the arc-shaped push plate and the protrusion can fit together better, reducing the friction between them, making the push plate slide more smoothly, facilitating the adjustment of the sealing tightness, and also preventing damage to components due to excessive friction, thus extending the service life of the oil seal.

[0013] As a further improvement to the above solution, positioning plates are fixedly installed on both sides inside the fixing ring, and a locking plate is provided on one side of each of the two positioning plates. One side of each of the two locking plates is fixedly connected to the adjacent first auxiliary half ring or second auxiliary half ring. Multiple fixing holes are opened on the side of each of the two positioning plates near the locking plate. A fixing rod is provided on one side of each of the two locking plates. One side of each of the two fixing rods passes through the adjacent locking plate and extends into the interior of the adjacent fixing hole. The diameter of the fixing hole is larger than the diameter of the fixing rod.

[0014] Through the above technical solution, the fixing rod inserted into the fixing hole can restrict the rotation of the first auxiliary half ring and the second auxiliary half ring, preventing excessive rotation of the first and second auxiliary half rings during the adjustment of the sealing tightness or motor operation, which would affect the cooperation between the push plate and the protrusion, thereby ensuring the accuracy and stability of the sealing tightness adjustment; at the same time, the diameter of the fixing hole is larger than the diameter of the fixing rod, so that the fixing rod can have a certain amount of wobbling space in the fixing hole, which will not affect the movement of the first and second auxiliary half rings during the pressing process of the oil seal under the action of the push spring.

[0015] As a further improvement to the above solution, a limiting plate is fixedly installed at the other end of each of the two fixing rods, and a pull-back spring is sleeved on each of the two fixing rods. The two ends of the two pull-back springs are respectively fixedly installed with the adjacent locking plate and the limiting plate.

[0016] Through the above technical solution, the pull-back spring always applies a pulling force to the locking plate in the direction of the positioning plate, ensuring that the fixing rod always stays in the fixing hole, preventing the fixing rod from accidentally dislodging from the fixing hole, enhancing the reliability of the rotation restriction of the first auxiliary half ring and the second auxiliary half ring, and further ensuring the stability of the oil seal sealing performance.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention, by incorporating auxiliary and adjusting components, assists the oil seal in sealing and allows for flexible adjustment of the seal tightness. Under complex operating conditions of the motor, the clamping force on the oil seal can be adjusted according to actual needs to ensure that the oil seal always maintains a good sealing effect. At the same time, the cooperative design between various components, such as the fixing rod and fixing hole, and the push plate and protrusion, ensures the stability and accuracy of the adjustment process, effectively solving the problem of insufficient sealing performance of traditional oil seals under complex operating conditions, and improving the reliability and service life of new energy vehicle motors. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention with an adjustment component;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention with auxiliary components;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention, which includes a positioning plate and a locking plate.

[0023] Figure 5 This is a schematic diagram of the structure of the present invention, which includes a push plate.

[0024] Main Symbol Explanation:

[0025] 1. Oil seal; 201. First auxiliary half-ring; 202. Second auxiliary half-ring; 301. Limit rod; 302. Push spring; 303. Push plate; 304. Bump; 4. Fixed ring; 5. Positioning plate; 6. Locking plate; 7. Fixed rod; 8. Restricting plate; 9. Pull-back spring. Specific Embodiment

[0026] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0027] Please combine Figures 1-5 , An oil seal for a motor of a new energy vehicle in this embodiment includes an oil seal 1 arranged in a "C" shape. An auxiliary component capable of assisting the oil seal 1 in sealing is provided inside the oil seal 1, and a plurality of adjusting components capable of adjusting the sealing tightness of the auxiliary component are provided on the auxiliary component.

[0028] The auxiliary component includes a first auxiliary half-ring 201 sleeved on one side inside the oil seal 1. A socket slot is opened inside the first auxiliary half-ring 201. A second auxiliary half-ring 202 is sleeved on the other side inside the oil seal 1. Both ends of the second auxiliary half-ring 202 extend into the inside of both ends of the socket slot of the first auxiliary half-ring 201. The inner ring surfaces of the first auxiliary half-ring 201 and the second auxiliary half-ring 202 are both in contact with one side of the inner cavity of the oil seal 1.

[0029] The first auxiliary half-ring 201 and the second auxiliary half-ring 202 cooperate with each other to form an auxiliary sealing structure, enhancing the overall sealing effect of the oil seal 1. They are in contact with the inner cavity of the oil seal 1, and can further block the leakage of lubricating oil and the entry of external impurities on the basis of the original sealing of the oil seal 1.

[0030] A fixed ring 4 is fixedly installed in the inner cavity of the oil seal 1. The adjusting component includes a plurality of limit rods 301 fixedly installed on the first auxiliary half-ring 201 and the second auxiliary half-ring 202. A push spring 302 is sleeved on each limit rod 301. A push plate 303 is slidably sleeved on each limit rod 301. One end of each push spring 302 abuts against the adjacent push plate 303, and the other end of each push spring 302 abuts against the adjacent first auxiliary half-ring 201 or second auxiliary half-ring 202.

[0031] The push spring 302 applies a pushing force to the push plate 303 in its natural state. Under the restriction of the limit rod 301, the push plate 303 transmits the pushing force to the first auxiliary half ring 201 and the second auxiliary half ring 202, thereby applying additional clamping force to the sealing part of the oil seal 1 by the first auxiliary half ring 201 and the second auxiliary half ring 202, improving the sealing effect. At the same time, by adjusting the compression degree of the push spring 302, the clamping force on the first auxiliary half ring 201 and the second auxiliary half ring 202 can be changed, thereby adjusting the tightness of the seal.

[0032] The inner ring surface of the fixed ring 4 is provided with a first sliding groove. Multiple protrusions 304 are fixedly installed on the inner ring surface of the fixed ring 4. Each pair of adjacent protrusions 304 are symmetrically located on both sides of the first sliding groove. One end of each limiting rod 301 extends into the interior of the first sliding groove. Both sides of each push plate 303 are arc-shaped. Each protrusion 304 is arc-shaped.

[0033] The limiting rod 301 slides within the first sliding groove, ensuring the stability of the movement of the push spring 302, the push plate 303, and the first auxiliary half ring 201 and the second auxiliary half ring 202. The protrusion 304 cooperates with the push plate 303. When the push plate 303 slides on the limiting rod 301, the protrusion 304 can limit the sliding range of the push plate 303. At the same time, depending on the contact position between the push plate 303 and the protrusion 304, the compression degree of the push spring 302 can be adjusted to achieve fine adjustment of the sealing tightness.

[0034] Positioning plates 5 are fixedly installed on both sides inside the fixed ring 4. A locking plate 6 is provided on one side of each of the two positioning plates 5. One side of each of the two locking plates 6 is fixedly connected to the adjacent first auxiliary half ring 201 or second auxiliary half ring 202. Multiple fixing holes are opened on the side of each of the two positioning plates 5 near the locking plate 6. A fixing rod 7 is provided on one side of each of the two locking plates 6. One side of each of the two fixing rods 7 passes through the adjacent locking plate 6 and extends into the interior of the adjacent fixing hole. The diameter of the fixing hole is larger than the diameter of the fixing rod 7. A limiting plate 8 is fixedly installed on the other end of each of the two fixing rods 7. A pull-back spring 9 is sleeved on each of the two fixing rods 7. The two ends of the two pull-back springs 9 are fixedly installed to the adjacent locking plate 6 and the limiting plate 8, respectively.

[0035] The fixing rod 7 is inserted into the fixing hole, which can restrict the rotation of the first auxiliary half ring 201 and the second auxiliary half ring 202, and prevent the first auxiliary half ring 201 and the second auxiliary half ring 202 from rotating excessively during the adjustment of the sealing tightness or the operation of the motor, which would affect the cooperation between the push plate 303 and the protrusion 304, thereby ensuring the accuracy and stability of the sealing tightness adjustment. At the same time, the diameter of the fixing hole is larger than the diameter of the fixing rod 7, so that the fixing rod 7 can have a certain amount of wobbling space in the fixing hole, which will not affect the movement of the first auxiliary half ring 201 and the second auxiliary half ring 202 during the pressing process of the oil seal 1 under the action of the push spring 302.

[0036] The implementation principle of an oil seal for a new energy vehicle motor in this embodiment is as follows: When it is necessary to adjust the sealing tightness of the oil seal 1, first pull the limiting plate 8 to pull the fixing rod 7 out of the fixing hole. According to the actual needs, push the push plate 303 to slide on the limiting rod 301. Since the two sides of the push plate 303 are arc-shaped, they cooperate with the arc-shaped protrusion 304. The push plate 303 changes the compression degree of the push spring 302 during the sliding process.

[0037] When the push spring 302 is compressed, it pushes the first auxiliary half ring 201 and the second auxiliary half ring 202, so that the two apply a greater clamping force to the sealing part of the oil seal 1, thereby adjusting the tightness of the seal.

[0038] During the adjustment process, the fixing rod 7 can sway to a certain extent in the fixing hole, which will not affect the movement of the first auxiliary half ring 201 and the second auxiliary half ring 202 under the action of the push spring 302.

[0039] After adjustment, the fixing rod 7 is inserted into the fixing hole. This effectively prevents the first auxiliary half ring 201 and the second auxiliary half ring 202 from rotating excessively, ensuring the stability of the engagement between the push plate 303 and the protrusion 304, ensuring the accuracy of the sealing tightness adjustment. The pull spring 9 always applies tension to the locking plate 6, keeping the fixing rod 7 in the fixing hole, thus enhancing the reliability of the entire adjustment structure.

[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An oil seal for a motor of a new energy vehicle, comprising an oil seal (1) arranged in a "C" shape, characterized in that, The oil seal (1) is provided with an auxiliary component inside, which can assist the oil seal (1) in sealing. The auxiliary component is provided with a plurality of adjustment components that can adjust the tightness of the sealing of the auxiliary component. The auxiliary component includes a first auxiliary half ring (201) sleeved on one side inside the oil seal (1). The first auxiliary half ring (201) has an insertion groove inside. The other side inside the oil seal (1) is provided with a second auxiliary half ring (202). Both ends of the second auxiliary half ring (202) extend into the inside of the insertion groove of the first auxiliary half ring (201). The inner ring surfaces of the first auxiliary half ring (201) and the second auxiliary half ring (202) are both in contact with one side of the inner cavity of the oil seal (1).

2. The oil seal for a new energy vehicle motor as described in claim 1, characterized in that, The inner cavity of the oil seal (1) is fixedly installed with a fixing ring (4). The adjustment assembly includes multiple limiting rods (301) fixedly installed on the first auxiliary half ring (201) and the second auxiliary half ring (202). Each limiting rod (301) is fitted with a push spring (302). Each limiting rod (301) is slidably fitted with a push plate (303). One end of each push spring (302) abuts against the adjacent push plate (303), and the other end of each push spring (302) abuts against the adjacent first auxiliary half ring (201) or second auxiliary half ring (202).

3. The oil seal for a new energy vehicle motor as described in claim 2, characterized in that, The inner ring surface of the fixed ring (4) is provided with a first sliding groove. Multiple protrusions (304) are fixedly installed on the inner ring surface of the fixed ring (4). Each pair of adjacent protrusions (304) are symmetrically located on both sides of the first sliding groove. One end of each limiting rod (301) extends into the interior of the first sliding groove.

4. The oil seal for a new energy vehicle motor as described in claim 3, characterized in that, Each of the push plates (303) is arc-shaped on both sides, and each of the protrusions (304) is arc-shaped.

5. The oil seal for a new energy vehicle motor as described in claim 2, characterized in that, Positioning plates (5) are fixedly installed on both sides inside the fixing ring (4). A locking plate (6) is provided on one side of each of the two positioning plates (5). One side of each of the two locking plates (6) is fixedly connected to the adjacent first auxiliary half ring (201) or second auxiliary half ring (202). Multiple fixing holes are provided on the side of each of the two positioning plates (5) near the locking plate (6). A fixing rod (7) is provided on one side of each of the two locking plates (6). One side of each of the two fixing rods (7) passes through the adjacent locking plate (6) and extends into the interior of the adjacent fixing hole. The diameter of the fixing hole is larger than the diameter of the fixing rod (7).

6. The oil seal for a new energy vehicle motor as described in claim 5, characterized in that, The other ends of the two fixed rods (7) are fixedly installed with limiting plates (8), and the two fixed rods (7) are fitted with pull springs (9). The two ends of the two pull springs (9) are fixedly installed with the adjacent locking plates (6) and limiting plates (8) respectively.

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